Bootstrap Vue @charset issue

Description

I have an issue on build (not dev) with Bootstrap Vue, shows error on the /dist/bootstrap-vue.css file @charset UTF8 etc, similar to what Ive seen elsewhere, but cant find how to fic this, any ideas at all.

Its the same theme as this demo at https://priceless-nobel-a7290d.netlify.com/ but with Vuetify and Bootstrap Vue added. Wordks fine in dev mode.

Steps to reproduce

Clear steps describing how to reproduce the issue. Please please please link to a demo project if possible, this makes your issue much easier to diagnose (seriously).

Expected result

Build to dist folder

Actual result

Throws error on /dist/bootstrap-vue.css over the @charset UTF import

Environment


Libs:
- gridsome version: Latest
- @gridsome/cli version: Latest


Browser:
- [ ] Chrome (desktop) version XX
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX

For Tooling issues:
- Node version: Latest
- Platform:  Linux

Others:

gridsome / gridsome